30-seconds-of-code/javascript/snippets/pad.md

title, type, tags, cover, dateModified

title	type	tags	cover	dateModified
Pad string	snippet	string	blue-lake	2020-10-22T20:24:04+03:00

Pads a string on both sides with the specified character, if it's shorter than the specified length.

• Use String.prototype.padStart() and String.prototype.padEnd() to pad both sides of the given string.
• Omit the third argument, char, to use the whitespace character as the default padding character.

const pad = (str, length, char = ' ') =>
  str.padStart((str.length + length) / 2, char).padEnd(length, char);

pad('cat', 8); // '  cat   '
pad(String(42), 6, '0'); // '004200'
pad('foobar', 3); // 'foobar'